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Description Of Business And Basis Of Presentation (Narrative) (Details) CAD in Millions |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 20, 2015 CAD | Mar. 20, 2015 USD ($) | Jun. 30, 2015 USD ($) | Sep. 30, 2017 item | Sep. 30, 2016 USD ($) item | Jun. 30, 2016 item | Sep. 30, 2015 USD ($) item | Sep. 30, 2016 USD ($) item | Sep. 30, 2015 USD ($) item | Dec. 31, 2018 CAD | Oct. 31, 2014 | Dec. 31, 2013
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of ship-based casinos | item |  |  |  |  | 13 |  |  | 13 |  |  |  |
Number of cruise ship owners | item |  |  |  |  |  |  |  | 4 |  |  |  |
Number of ships for which concession agreements will be terminated | item |  |  |  |  |  |  | 8 |  | 8 |  |  |
Consideration to be received in relation to early termination of concession agreements | $ |  |  | $ 4,000,000 |  |  |  |  |  |  |  |  |
Loss on disposition of fixed assets | $ |  |  | $ 600,000 |  | $ (5,000) |  | $ (136,000) | $ (42,000) | $ (281,000) |  |  |
Scenario, Forecast [Member] |  |  |  |  |  |  |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Estimated project costs | CAD |  |  |  |  |  |  |  |  |  | CAD 50.0 |  |
Correction of Prior Year Balances [Member] |  |  |  |  |  |  |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Understatement to cash provided by operating activities, adjustment | $ |  |  |  |  |  |  |  |  | 1,000,000 |  |  |
Understatement to cash used in investing activities, adjustment | $ |  |  |  |  |  |  |  |  | $ 1,000,000 |  |  |
Percentage Of CBS Owned By CCE [Member] |  |  |  |  |  |  |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  | 75.00% |  |  | 75.00% |  |  |  |
Lot Polish Airlines Invesment [Member] |  |  |  |  |  |  |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Owned by noncontrolling interest |  |  |  |  | 33.30% |  |  | 33.30% |  |  |  | 33.30%
Casinos Poland Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  | 66.60% |  |  | 66.60% |  |  |  |
Number of casinos owned and operated | item |  |  |  |  |  |  |  | 8 |  |  |  |
Century Bets! Inc. [Member] |  |  |  |  |  |  |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Owned by noncontrolling interest |  |  |  |  | 25.00% |  |  | 25.00% |  |  |  |
Century Casinos Europe GmbH [Member] | Percentage Of Century Downs Racetrack Owned By Century Casinos Europe [Member] |  |  |  |  |  |  |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  | 75.00% |  |  | 75.00% |  |  |  |
Oceania Cruises [Member] |  |  |  |  |  |  |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Term of consulting agreement |  |  |  |  |  |  |  | 2 years |  |  |  |
Consulting Fee | $ |  |  |  |  |  |  |  | $ 2,000,000 |  |  |  |
Consulting Fee payable per quarter | $ |  |  |  |  |  |  |  | $ 250,000 |  |  |  |
TUI Cruises, TUI Discovery [Member] |  |  |  |  |  |  |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of passengers | item |  |  |  |  |  | 2,067 |  |  |  |  |  |
TUI Cruises, Mein Schiff 5 [Member] |  |  |  |  |  |  |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of passengers | item |  |  |  |  | 2,500 |  |  |  |  |  |  |
TUI Cruises, Mein Schiff 6 [Member] | Scenario, Forecast [Member] |  |  |  |  |  |  |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of passengers | item |  |  |  | 2,500 |  |  |  |  |  |  |  |
Taihu International Cruises [Member] |  |  |  |  |  |  |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of passengers | item |  |  |  |  |  |  |  | 1,200 |  |  |  |
Century Downs Racetrack And Casino [Member] |  |  |  |  |  |  |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  | 75.00% |  |  | 75.00% |  |  |  |
Owned by noncontrolling interest |  |  |  |  | 25.00% |  |  | 25.00% |  |  |  |
Century Downs Racetrack And Casino [Member] | Century Casinos Europe GmbH [Member] |  |  |  |  |  |  |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Additional ownership acquired | 60.00% | 60.00% |  |  |  |  |  |  |  |  |  |
Amount of credit agreement converted | CAD | CAD 11.0 |  |  |  |  |  |  |  |  |  |  |
Gain on conversion of debt receivable to equity recognized in accumulated other comprehensive income | $ |  | $ 100,000 |  |  |  |  |  |  |  |  |  |
Gain on conversion of debt receivable to equity | $ |  | $ 600,000 |  |  |  |  |  |  |  |  |  |
Mendoza Central Entretenimientos S. A. [Member] | Century Casinos Europe GmbH [Member] |  |  |  |  |  |  |  |  |  |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest |  |  |  |  | 7.50% |  |  | 7.50% |  |  | 7.50% |

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